Cyber Security/Mainframe Daily Rate Contract WFH/Hybrid Mainframe Security Specialist | Daily Rate Contract | Cyber & Infrastructure We’re currently seeking an experienced Mainframe Security Specialist for a daily rate contract opportunity with a leading enterprise organisation. Key Details Manage and enhance ACF2/RACF security architecture across mainframe platforms Drive cyber security practices in alignment with Essential 8 standards Provide support for audits (SOX, SOC1) and manage certificate processes Perform upgrades, patching, and implementations across critical systems Collaborate with infrastructure, cyber, and governance teams to uplift security posture Maintain and troubleshoot NetMaster/MAI, SOLVE, and Unix on z/OS systems Key Skills & Experience: Minimum 5 years' experience in Mainframe Security Minimum 5 years' experience in Cyber Security Strong command of ACF2 and/or RACF frameworks Background in Cyber Security and Mainframe Security Working knowledge of Unix in z/OS, NetMaster/MAI, SOLVE Experience with JCL, SAS, Clist, and/or REXX Familiarity with CICS, IMS, DB2, MQ and ADABAS Understanding of CONTROL-M and mainframe certificate management Experience supporting audit and compliance frameworks (SOX, SOC1) Proficiency with ticketing systems (ideally ServiceNow) Strong communication, organisation, and time management skills Bonus Points: Familiar with Microsoft Office tools Quick learner with a proactive mindset Comfortable managing competing priorities in high-paced environments